Jimmy Jansen

Career Highlights

I like turning messy systems into something that actually works and ships

Senior Software Architect

Storyteq B.V.
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As Senior Software Architect at Storyteq, I work with engineering teams to improve our video personalization platform. My focus is on making our systems work better together and helping teams deliver features more efficiently.

Key Achievements

  • – Working on unifying multiple legacy applications into a more cohesive platform
  • – Helping teams adopt better engineering practices
  • – Designing systems to handle our video rendering workload more efficiently
  • – Leading the gradual transformation of the platform architecture

Approach & Impact

  • – Work with teams across the organization to align technical and business needs
  • – Build systems that can grow without falling apart
  • – Turn business needs into technical solutions that work
  • – Spot problems early and build flexible solutions
  • – Help teams establish practices that actually get followed

Technology Stack

Architecture:
System Design Microservices Microfrontends REST APIs GraphQL Documentation
Frontend:
Vue Angular React TypeScript
Backend:
Node.js Java PostgreSQL MySQL
DevOps & Cloud:
Docker Kubernetes Helm GCP CI/CD Pipelines
Leadership:
Team Leadership Mentoring Technical Strategy Stakeholder Management

Principal Software Engineer

Rangle.io
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As Principal Engineer at Rangle, I worked as a consultant for various clients, from startups to large enterprises. I helped teams solve technical problems, modernize legacy systems, and improve performance.

Key Achievements

  • – Worked on 20+ client projects across different industries
  • – Helped modernize a 10M+ line legacy codebase, improving performance and reducing complexity
  • – Mentored developers across multiple client projects
  • – Supported several early-stage startups in getting their products to market

Approach & Impact

  • – Managed multiple concurrent client projects effectively
  • – Spent a lot of time pair programming, running technical workshops, and mentoring developers
  • – Learned new technologies quickly to meet different client needs
  • – Helped align business, design, and engineering teams
  • – Built scalable architectures using modern cloud-native technologies

Technology Stack

Architecture:
Microservices System Design API Design Legacy Modernization Performance Optimization
Frontend:
React Next.js TypeScript
Mobile:
React Native iOS Android Mobile UI/UX
Backend:
Node.js REST APIs MongoDB PostgreSQL
DevOps & Cloud:
Docker Kubernetes AWS Azure GCP CI/CD Pipelines
Leadership:
Client Management Technical Mentoring Workshop Facilitation Cross-functional Collaboration

Senior Software Engineer

Albelli
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Over 5 years at Albelli, I worked on their mobile app for iOS and Android. The app grew from a small project to a significant revenue channel. I helped build features for photo products and improved the app's performance.

Key Achievements

  • – Built a 3D mug customization feature that users really liked
  • – Worked on product flows for books, calendars, mugs, and wall decor
  • – Improved our CI/CD pipeline to make builds faster and more reliable
  • – Led the migration from Cordova to a custom hybrid framework for better performance

Approach & Impact

  • – Mentored junior developers through regular pairing sessions
  • – Set up comprehensive testing to reduce production bugs
  • – Optimized app performance for faster startup and lower memory usage
  • – Developed hybrid app patterns that other teams could reuse

Technology Stack

Frontend:
React TypeScript JavaScript
Mobile:
Swift (iOS) Kotlin/Java (Android) React Native Cordova
Backend:
Node.js REST APIs
DevOps & Cloud:
CI/CD Pipelines Automated Testing AppCenter
Leadership:
Team Mentoring Cross-platform Collaboration Performance Optimization Technical Innovation

Software Engineer

Quby
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Joined Quby's R&D team developing the Toon Smart Energy Meter. Worked on IoT features and energy monitoring capabilities for Dutch households.

Key Achievements

  • – Developed smart home features and energy monitoring capabilities
  • – Delivered the first version of Toon's phone and smartwatch apps
  • – Built one of the first smartwatch apps to control home thermostats
  • – Contributed to IoT features that helped users track and reduce energy consumption

Approach & Impact

  • – Delivered features in a fast-paced R&D environment
  • – Worked with hardware team to improve data collection
  • – Participated in user testing to improve the product

Technology Stack

Mobile:
iOS Android Smartwatch Apps Mobile UI/UX
Backend:
Node.js JavaScript IoT Integration REST APIs
IoT & Hardware:
Embedded Systems Smart Meters Home Energy Management Smart Home Technology

Early Career

Student Assistant

Hogeschool van Amsterdam
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Intern

Vattenfall
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Junior Software Engineer

Javaland
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Junior Software Engineer

Securityalert4you
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